Machine for handling strip material



April 18, 1933. A. POTDEVIN MACHINE FOR HANDLING STRIP- MATERIAL I Filed Aug. 19; 1930 3 Sheets-Sheet 1 A TTORNEYS.

April 18, 1933- A. POTDEVIN I MACHINE FOR HANDLING STRIP MATERIAL 3 Sheets-Sheet 2 Filed Aug. 19, 1950 31 INVENTOR.

ATTORNEYS.

' the machine when a paper supply roll is.

Patented Apr. 18, 1933 UNITED STATES PATENT orrlcs,

ADOLPH mm, 01' GARDEN CITY, NEW YORK, ASSIGNOB TO POTDEVIN CHINE COIPANY, OI BROOKLYN, NEW YORK, A CORPORATION 01' NEW YORK ncnnm I03 HAHDLING s'rm Application fled All!!! 18, 1930. Serial 1T0. 476,373.

The present invention is directed an improved a paratus for use in connection with the simultaneous handling of a plurality of sheets of material, particu arly in connection with bag making machines in the making of multi-walled bags. Heretofore n machines of this character it has been necessary to stop exhausted in order that a new roll of paper may be substituted. This not only consumes time but is objectionable in that where a machine handling a pluralit of webs at a time. is shut down it is difiicu to start the ma chine in operation again with the webs properl registered with each other.

he present invention, therefore, has for another one of its ogi'ects the provision of means whereby not 0 may the new roll of paper or other materia be placed in the machlne without shutting the machine down but this roll may be accurately positioned in the machine with the minimum of effort so as properly to re ster the material with the other webs or si eets already in the machine and to maintain the necessary tension on the web. I

In the drawings accompanying this application:

Fig. 1 is a view in elevation of an embod1- ment of my invention;

Fig. 2 is a plan view of a detail;

Fig. 3 is a section on the hue 3-3 of Fi 1 i 4 is an elevational view showin a new roll ing placed in the machine; an

Fig. 5 is a plan view of one of the rolls of a r or other material being handled an ti: various mechanisms for properly positioning the same in the machine.

Referring to the drawings in detail: As above pointed out this invention relates to a t machine for handling simultaneously a plurality of strips or webs of paper such, for

example, as a bag making machine for the making of multi-walled bags. For purposes of illustration I have shown a machine for handling three webs of paper simultaneously.

1 It is to be understood, however, that the number may be varied as desired.

1, 2 and 3 designate, respectively, three stands for the paper supply rolls, two rolls Each stand is provided with brackets 10, a

and mounted in each of these brackets and extending transversel of the machine, i. e., len hwise of the. rolls of paper is a hollow rod 11. Extending through each of these rods and projecting from each end thereof is a rod 12 having an arm 13 aflixed to each end.

The arms on one stand extend toward the roll of paper on the adjacent stand so that the outer end'of these arms overlie the paper roll as will be seen from Fig. 1.

The outer ends of each pair of brake arms 13 are connected to each other b a rod 14 which also extends lengthwise o the paper rolls. Intermediate the arms 13 and about midway of the rod 14 is a friction device or brake, which as a whole is designated 15. This brake comprises two spaced mounts 16 carried by rod 14 and in turn ,carrying short rods 17 over which and the rod 14 is mounted a piece of leather belting or other suitable material 18. The rod 14 and rods 17 are arranged roughly in the form ofa triangle with the rod 14 at the apex so that one lead of the leather belting or other material 18 will rest upon the paper roll.

On each of the rods 14, and intermediate I the arms 13 and the friction device 15, I provide plates 19, one at each end of the paper roll. These plates are clamped to the rod 14 by a bolt 20 and are so spaced apart as to lie against the ends of the roll of paper.

Each roll of papzris mounted, as above a noted, in an open aring so as to be lifted out or lowered into the bearing with the minimum of effort, and in this connection it is to be noted that ea h roll is supported in its The end of one of each air of arms 13 adj acent each stand is provi ed with an annular stand. Each one of the shafts 11 is also e rotated by a worm 34 35 through bevel gears 36 and 37. The outer or free ends of each of the arms 31 is provided with an open bearing 38. Each one of theses bearings has a spring loaded block 39 which 3 engages shaft 21 and prevents the same from rolling out of the hearing when the arms 31- are in a vertical position during the loading other and without stopping the machine.

flange 24 which rides in a'notch 25 cut in a nut 26 mounted on a threaded rod 27 which is mounted for rotation but held against longitudinal movement in the bracket 10.

The rod 27 is providedwith a handle 28 and rotation of this handle will of course effect movement of the nut 26 and hence longitudinal movement of the shaft or rod 12 and a lateral movement of each pair of arms 13,

.it being understood of course that this same mechanism is provided at each stand.

Inasmuch as the arms 13 carry the rods 14 and the latter carry the plates 19. it will be at all times. This permits the roll of paper to be accurately positioned in the machine initially.

In order that the pressure of the frictiondevices 15 on the'paper rolls may not be applied before the new roll has been started, s lice made and the roll brought up to speed,

pivotally mount an arm 29 on each stand, each arm being notched as shown at 30 and adapted to support the arms 13 in any predetermined position desired with respect to the paper roll, the idea being that initially when the paper rolls are of maximum diameter and before the roll is started and splice made, as above referred to, the arms 13 will be supported adjacent the tops of the arms 29 to prevent friction device 15 from coming in contact with the roll before it has been properly spliced, but permitting the guide plates 19 'to engage the ends of the roll for alignment. Eventually the arms 29 will be removed entirely as shown at the center roll in Fig. 1.

I have previously explained that the present invention provides means for permitting of the removal of an empty or su stantiall; empty roll from the machlne and its substltution by a full roll. In this connection I mount a pair of arms 31 provided with counterweights 32 on the hollow shaft 11 on each rovided 'with a worm gear 33 adapted to operation.

The lifting arms 31 are of such length that rotation of one of the cranks 35' will bring the bearings of the corresponding arms into onriven from a crank '3 provided with a pair of spaced collars 42 and the bearings 38 of the lifting arms 31 engage the shaft 21 between these collars and to keep the proper alignment of the nearly spent roll while being lifted from its main bearings to make room for a new roll, I provide a pin 40 which is slidably mounted in the end of the arm 31 and clamped in position by thumb screw 41. p

The stand 3 is provided with two pairs of brackets 10 and 10 as distinguished from the single pair of brackets of the other stands.

This is for the .purpose of permitting two friction devices 15 to be pivoted on this stand, one friction device of course being for the next succeeding roll of paper as above explained, while the other is forthe roll carried in the stand 3.

In the drawings in Fig. 4, I have shown a fresh roll of paper 50 being lowered into place on the stand 3, Fig. 1 showing the roll in position on the stand.

In practice and with the machine in operation the arms 31 at the stand 3 and which initially stood in the position of the arms 31 at the stand 2 in Fig. 1 are moved or swungv upwardly ,by rotating the crank 35. This brings the bearings 38 carried at the outer end of these arms under the paper roll shaft 21 and continued rotation of the crank 35 will lift the nearly empty roll 51 out of its bearings in the stand 3 and raise it to the position shown in Fig. 1 and in Fig. 4.

The nearly spent roll 51 is moved by the arms 31 to a position far enough to the left to permit of the lowering of the new roll 50 without the same coming in contact with the moving web of paper from the roll 51. After placing the new roll 50 in position,-the leading edge of this roll being supplied with an adhesive 53'and with this leading edge maintained in the upper part of the roll as shown in Fi 4 and the lifting tackle employed in lowering the roll 50 into position removed. the arms 13 cooperating with the roll of paper in the particular stand under consideration are lowered to a position to bring the registering plates 19 into engagement with the new roll to properly register the same. At; the same time the arm 29 with its notches 30 is moved to such position that the proper notch therein will be engaged'by the pin 13*to keep the friction device 15 with its friction belt out of engagement with the new roll.

When it is desired to start the new roll the same is given a start manually in the direction in which the web wheels and the glued surface 53 inserted between the material 52 coming from the roll 51 and the idler roll I, to splice the old roll and the new roll 'toeach After the old roll 51 is spent the shaft 21 is removed from the arms 31,'then by again.

moved in a counter-clockwise direction into position below the new roll shaft asshown at stand 2 in Fig. 1 so as to be ready to pick upthe roll 50 when the latter has been suflicientbe made in the details of construction above described within the purview of this invention.

What I claim is -1. In a machine 'for handling strip mate- Q rial, the combination of a support or stand for a roll of the material, a pair of arms pivoted on said stand or support, bearings mechanism for rotating said arms to bring said bearings beneath the supply roll, continued rotation of said arms lifting the roll out of its original position into a new pos1-. tion for rotation, while continuing the operation of withdrawing material from the roll.

2. Ina machine for the simultaneous handling of a plurality of strips of mater al, the combination of a pluralit of stands or supports for the supply rol s, and brake mechanism carried by each support for braking the supply roll carried onthe next succeeding stand or support.

3. In a machine for the simultaneous handling of a plurality of strips of material, the combination of a plurality of stands or supports for the supply rolls, braking mechanism carried by each stand or support, the braking mechanism carried by one stand braking the supply roll'on the succeed ng stand, and brake regulating means carried by each stand for. regulating the brake for the roll on the stand carrying the regulatmg means. w a

4. In a machine for the simultaneous handling of a plurality of strips of material, the combination of a stand or su port for each supply roll of material, br e mechamsm comprising a (pair of pivoted arms mounted on each stan a flexible brakln'g member carried by each pair of arms, the braking member carried by the arms on one stand engaging the supply roll mounted on the succeeding stand, and a pivoted arm mounted on each stand and cooperating with said brake carrying arms to regulate the brake pressure on each supply-roll independently.

5. In a machine for handling strip material, the combination of a support or stand for mounting the material supply roll for rotation, a shaft attached to the supply roIl and directly sup orting the same in 1ts stand, spaced flanges a jacent one end ofsaid shaft, a pair of pivoted arms each of which is provided with a bearing for the said shaft, and means for rotating said arms as a unit to bring the bearings thereof beneath said shaft, continued rotation of said arms raising the roH out of. its hearings in said stand, thebearing carried by one of said arms engaging the shaft between the flanges thereon to restrict end movementof the roll with respect to said arms.

6.- In a machine for handlin strip material, the combination of a stan or support for rotatably mounting the supply 'roll of T material, a pair of arms adjacent'the supply roll and provided with adjustable bearings adapted to receive the supply 'roll, and means for rotating-said arms to raise the supply roll out of its hearings in said stand, continued rotation of the arms carrying the roll into a new position for rotation, without interrupting the operation of withdrawing materialcarried by said arms, and worm and gear a from the roll.

Z. In a machine for handling a web ofmaterial, the combination of a stand or support comprising bearings in which the supply roll of material is rotatably mounted, rotatable means for removing the supply roll from the bearings of said stand continued rotation of the said rotatable means supporting the supply roll for rotation in another position, and a guide roll about which the material fromsaid su ply roll and the material from a replenishmgroll placed in said bearings are led to effect the splicing of the two materials to each other. 1

8. In a machine for handling a web material, the combination of a stand for a terial from the supply roll to remove the roll from its hearings in said stand and support the roll for rotation in another position, continued forward rotation of said rotatable means effecting a positioning of the said rotatable means into position to remove the next supply roll from said bearings.

9. In a machine for handling a web of material, thecombination of a stand or su port comprising bearings 'for' rotatably mounting a supply roll of material, means rotatable into position during the operation of withdrawing material from said supply roll to remove the supply roll from said bearings and to support the roll for rotation in another position, means for joining or splicing the material of said supply roll-to the material of a second supply roll placed in said bearings, during the withdrawing of material from both rolls, and means for continuing the forward rotation of said rotatable means to move the same into position to remove said next supply roll from its bearings.

10. In a machine for the handling of strip material, the combination of a stand or support for a supply roll of material, a pair of pivoted arms adjacent said stand, bearings for the supply roll carried by said arms, and

no I

means for rotating said arms to bring said bearings into position to engage said sugply roll, continued rotation of said arms 1i mg the roll from its support and supporting the 5 roller for rotation in another position while continuing the operation of withdrawin materialv from the roll, continued forwar rotation of said arms bringing the same into position to remove the next succeeding supply roll from said stand. I

11. In a machine for handling strip material, the combination of a support for a supply roll of material, a pair of arms adjacent said support, means for rotating said arms-to raise the supply roll away from said support, continued rotation of the arms while continuing the withdrawing of material from the supply roll carrying the suppl roll out of the path of a new supply roll 0 material being placed in said support.

12. In a machine for handling strip ma terial, the combination of a support for a supply roll of said material, a pair of pivoted counterweighted bearing arms mounted adjacent the supply roll, and a worm and gear mechanism for rotating said arms, continued rotation of said arms bringing the bearings thereof into engagement with the supply roll to raise the supply roll out of said support,

while the operation of withdrawing material from the supply roll continues, further forward rotation of the said arms moving the same into position to lift the next succeeding supply roll from said support.

This specification signed this 12th day of Aug, 1930.

ADOLPH POTDEVIN. 

